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Electron-ion thermal equilibration after spherical shock collapse

Author(s)
Rygg, J. R.; Frenje, Johan A.; Li, C. K.; Seguin, Fredrick Hampton; Petrasso, Richard D.; Meyerhofer, D. D.; Stoeckl, C.; ... Show more Show less
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.

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Abstract
A comprehensive set of dual nuclear product observations provides a snapshot of imploding inertial confinement fusion capsules at the time of shock collapse, shortly before the final stages of compression. The collapse of strong convergent shocks at the center of spherical capsules filled with D[subscript 2] and [subscript 3]He gases induces D-D and D-[superscript 3]He nuclear production. Temporal and spectral diagnostics of products from both reactions are used to measure shock timing, temperature, and capsule areal density. The density and temperature inferred from these measurements are used to estimate the electron-ion thermal coupling and demonstrate a lower electron-ion relaxation rate for capsules with lower initial gas density.
Date issued
2009-08
URI
http://hdl.handle.net/1721.1/51070
Department
Massachusetts Institute of Technology. Plasma Science and Fusion Center
Journal
Physical Review E
Publisher
American Physical Society
Citation
Rygg, J. R. et al. “Electron-ion thermal equilibration after spherical shock collapse.” Physical Review E 80.2 (2009): 026403. (C) 2010 The American Physical Society.
Version: Final published version
ISSN
0031-9007

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